Abstract
In this paper, we discuss a novel underwater localization method using 3D Electromagnetic (EM) wave attenuation pattern. To calculate the EM wave attenuation in underwater, according to distance, we use the Friis-Shelkunoff (FRIIS) formula, which mainly depends on antenna properties and medium variables. The research on these variables was executed in previous works [3, 4]. In this work, 3D underwater localization method is proposed using the 3D attenuation model and depth data from the additional pressure sensor, which is realized with the several anchor nodes located in fixed positions and mobile node for receiving EM waves with an attached pressure sensor. We measured mobile node attenuation data in the underwater with position change in the x-z vertical plane. And it was compared with the theoretical 3D spatial attenuation model. The preliminary results about 3D underwater localization show good agreement with theoretical estimation.
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